Lodgepole pine and trembling aspen competition: Neighbourhood studies within 22 to 39 year-old pine plantations of northern British Columbia

IF 1.2 4区 农林科学 Q3 FORESTRY
H. George
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引用次数: 0

Abstract

Six lodgepole pine plantations located within the Sub Boreal Spruce (SBS) biogeoclimatic zone of the northern interior of British Columbia were chosen to study the impacts of neighbourhood aspen competition on the growth of planted lodgepole pine (22–39 years old). At each site, 30 pine trees (CP) were selected as plot centres across the observed range of aspen competition. Information on the six nearest neighbours (NN) and a variety of competition indices were evaluated using linear and nonlinear models. Competition indices based on diameter or height relative to size were found as the best overall predictors of CP growth. Proximity of NN to the CP was found to be inconsistent as a predictor of growth. Individual pine and aspen NN modelling suggested aspen competition had the greatest influence on CP growth restriction. The results do not support aspen thresholds for optimizing the growth of free growing pine plantations. It is recommended that performance-based standards be developed that account for as...
黑松和白杨的竞争:不列颠哥伦比亚省北部22至39年树龄松树种植园的邻里研究
选择位于不列颠哥伦比亚省北部内陆亚北方云杉(SBS)生物地理气候带内的六个洛奇波尔松种植园,研究附近白杨竞争对种植洛奇波尔松树(22-39岁)生长的影响。在每个地点,30棵松树(CP)被选为白杨竞争观测范围内的地块中心。使用线性和非线性模型评估了六个最近邻居(NN)的信息和各种竞争指数。基于直径或高度相对于大小的竞争指数被发现是CP生长的最佳总体预测因素。神经网络与CP的接近程度被发现作为增长的预测因素是不一致的。个体松和白杨NN模型表明,白杨竞争对CP生长限制的影响最大。结果不支持白杨阈值来优化自由生长的松树种植园的生长。建议制定基于绩效的标准,考虑到。。。
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来源期刊
Forestry Chronicle
Forestry Chronicle 农林科学-林学
CiteScore
1.20
自引率
0.00%
发文量
6
审稿时长
18-36 weeks
期刊介绍: The Canadian Institute of Forestry has published The Forestry Chronicle, a professional and scientific forestry journal, since 1925. The Forestry Chronicle is published to provide information to forest practitioners about professional and scientific management of forests and their resources. The Forestry Chronicle provides forest practitioners in Canada and around the world with a means to communicate with their peers in the professional community.
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